[FEATURE] Revamp transceiver Arduino sketches

[benjaminwp18]

Is your feature request related to a problem? Please describe

The Arduino sketches are probably overcomplicated.

Describe the solution you'd like

Rewrite at least the float transceiver, and possibly the surface as well.

• Consider having a single iteration of the loop function correspond with a single competition run (or maybe a single vertical profile?).
• Support sending single depth data packets better (to verify for the judges that we're receiving them on the surface).
• Can we simplify the folder structure? Having the serialPrintf function shared between the scripts is nice, but having so many directories and symlinks is... meh.

[InvincibleRMC]

For simplifying the folder structure. The two solutions are use Arduino libraries. Or use the Arduino cli and link to our shared code.

[InvincibleRMC]

Maybe use std::array